Title:
PRINTED MATTER AND INFORMATION SECURITY SYSTEM USING THE PRINTED MATTER
Document Type and Number:
Japanese Patent JP3535444
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a steganography technique using a printed image as its medium, to prevent both forgery and illegal use of a printed matter and to embed the secret information in a printed matter for preserving and transmitting secretly the information.
SOLUTION: The information data are embedded in the image or pattern data printed on an object to be printed by the steganography method so that the information data are kept in a completely secret state by means of a printed matter. Then the information data are embedded in an original by the steganography method and this original is printed on the object to be printed for producing a printed matter. The image or pattern data are read out of the printed matter by means of a scanner and the original is restored. The secret information data are extracted from the restored original and outputted as the images, music, voices and characters. As the printed image or pattern data are used as a medium, the information is embedded in an image or a pattern that looks like just a mere printed matter and then can be extracted as necessary. As a result, the secret information is kept as a printed matter and also can be safely transmitted to another place.
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Inventors:
Kawaguchi, Eiji
Richard, Eason O.
Tsuda, Kunihiro
Richard, Eason O.
Tsuda, Kunihiro
Application Number:
JP2000087454A
Publication Date:
June 07, 2004
Filing Date:
March 27, 2000
Export Citation:
Assignee:
ASA SYSTEMS:KK
Kawaguchi, Eiji
Richard, Eason O.
Kawaguchi, Eiji
Richard, Eason O.
International Classes:
B42D15/10; B41J5/30; B41J29/00; B41J29/38; G06T1/00; G09C5/00; H04N1/32; H04N1/387; (IPC1-7): H04N1/387; B41J5/30; B41J29/00; B41J29/38; B42D15/10; G06T1/00; G09C5/00
Attorney, Agent or Firm:
安倍 逸郎